Peierls structural transition in quasi-one-dimensional organic crystals

Peierls transition in quasi-one-dimensional organic crystals of tetrathiofulvalene-tetracyanoquinodimethane (TTF-TCNQ) type is studied in the case where the conduction band is half filled and Fermi dimensionless quasi momentum kF = π/2 and where the concentration of conduction electrons is reduced a...

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Autores principales:	Andronic, Serghei, Casian, Anatolie
Formato:	article
Lenguaje:	EN
Publicado:	D.Ghitu Institute of Electronic Engineering and Nanotechnologies 2013
Materias:	Physics QC1-999 Electronics TK7800-8360
Acceso en línea:	https://doaj.org/article/2f46aad5e56641aca1193b2d3bc7aa5b
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spelling	oai:doaj.org-article:2f46aad5e56641aca1193b2d3bc7aa5b2021-11-21T11:59:46ZPeierls structural transition in quasi-one-dimensional organic crystals 2537-63651810-648Xhttps://doaj.org/article/2f46aad5e56641aca1193b2d3bc7aa5b2013-06-01T00:00:00Zhttps://mjps.nanotech.md/archive/2013/article/29776https://doaj.org/toc/1810-648Xhttps://doaj.org/toc/2537-6365Peierls transition in quasi-one-dimensional organic crystals of tetrathiofulvalene-tetracyanoquinodimethane (TTF-TCNQ) type is studied in the case where the conduction band is half filled and Fermi dimensionless quasi momentum kF = π/2 and where the concentration of conduction electrons is reduced and the band is filled up to a quarter of the Brillouin zone, kF = π/4. In the physical model of the crystal, it was simultaneously taken into account two the most important interactions of conduction electrons with the longitudinal acoustic phonons. The dispersion equation for renormalized phonons was deduced and solved numerically. The phonon frequency dependences on quasi momentum projection along molecular wires were calculated for different temperatures. The critical temperature of transition was determined.Andronic, SergheiCasian, AnatolieD.Ghitu Institute of Electronic Engineering and NanotechnologiesarticlePhysicsQC1-999ElectronicsTK7800-8360ENMoldavian Journal of the Physical Sciences, Vol 12, Iss 3-4, Pp 192-198 (2013)
institution	DOAJ
collection	DOAJ
language	EN
topic	Physics QC1-999 Electronics TK7800-8360
spellingShingle	Physics QC1-999 Electronics TK7800-8360 Andronic, Serghei Casian, Anatolie Peierls structural transition in quasi-one-dimensional organic crystals
description	Peierls transition in quasi-one-dimensional organic crystals of tetrathiofulvalene-tetracyanoquinodimethane (TTF-TCNQ) type is studied in the case where the conduction band is half filled and Fermi dimensionless quasi momentum kF = π/2 and where the concentration of conduction electrons is reduced and the band is filled up to a quarter of the Brillouin zone, kF = π/4. In the physical model of the crystal, it was simultaneously taken into account two the most important interactions of conduction electrons with the longitudinal acoustic phonons. The dispersion equation for renormalized phonons was deduced and solved numerically. The phonon frequency dependences on quasi momentum projection along molecular wires were calculated for different temperatures. The critical temperature of transition was determined.
format	article
author	Andronic, Serghei Casian, Anatolie
author_facet	Andronic, Serghei Casian, Anatolie
author_sort	Andronic, Serghei
title	Peierls structural transition in quasi-one-dimensional organic crystals
title_short	Peierls structural transition in quasi-one-dimensional organic crystals
title_full	Peierls structural transition in quasi-one-dimensional organic crystals
title_fullStr	Peierls structural transition in quasi-one-dimensional organic crystals
title_full_unstemmed	Peierls structural transition in quasi-one-dimensional organic crystals
title_sort	peierls structural transition in quasi-one-dimensional organic crystals
publisher	D.Ghitu Institute of Electronic Engineering and Nanotechnologies
publishDate	2013
url	https://doaj.org/article/2f46aad5e56641aca1193b2d3bc7aa5b
work_keys_str_mv	AT andronicserghei peierlsstructuraltransitioninquasionedimensionalorganiccrystals AT casiananatolie peierlsstructuraltransitioninquasionedimensionalorganiccrystals
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Peierls structural transition in quasi-one-dimensional organic crystals

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